Pilot
Pilot — multifunction JavaScript router.
Gas
Google Analytics on Steroids. A Google Analytics implementation with more power features.
Buster
A powerful suite of automated test tools for JavaScript.
Web Rx
WebRx is a Javascript MVVM-Framework built on ReactiveX for Javascript (RxJs) that combines functional-reactive programming with Observable-driven declarative Data-Binding, Templating and Client-Side Routing.
Paperclip.js
reactive DOM template engine built for speed, and extensibility
Boiler
Boiler is a utility library that makes every day tasks in JavaScript easier by providing over 115 methods that work on arrays, collections, functions, numbers, objects, and strings.
Highway
A fast, lightweight and simple Javascript routing library with no dependencies.
Uranium
Universal css-in-js media queries for React Native and React
Knockout Projections
Knockout.js observable arrays get smarter
Platform.js
A platform detection library that works on nearly all JavaScript platforms.
Marko
Marko template engine
Rivets
Declarative data binding facility
Ink
An HTML5/CSS3 framework used at SAPO for fast and efficient website design and prototyping
Jsviews
Interactive data-driven views, built on top of JsRender templates
Curl
A small, fast module and resource loader with dependency management. (AMD, CommonJS Modules/1.1, CSS, HTML, etc.)
Angular History
A history service for AngularJS. Undo/redo, that sort of thing. Has nothing to do with the "back" button, unless you want it to.